Bored-in lock



Dec. 2, 1941. I HVG. VOIGHT 2,264,420

BORED-IN LOCK Filed Aug. 28, 19:59 2 Sheets-Sheet 2 Patented Dec. 2, 194i BORED-IN LOCK Henry G. Voight, New Haven, Conn.,' assignor to Sargent & Company, New Haven, Conn, a corporation of Connecticut Application August 28, 1939, Serial No. 292,194

12 Claims.

This invention relates to door locks, and more particularly to so-called tubular or bored-in locks which may be installed in a door by making cylindrical openings through the edge and the face of the door, so that the usual more or less tedious mortising of the door to receive the lock will not be required.

More particularly the invention relates to that type of lock which shall be provided with a latch bolt and with means for dogging the latch bolt from one side of the door so that the latter may not be opened from the other side. It is also essential in a lock of this kind to provide means whereby, if the dogging mechanism is set, it will bereleased by the turning of the knob upon one side of the door and returned by a spring or other means to its normal inoperative position.

In the past door locks of this general character have been suggested, and it has been more or less common practice to provide a push button in the knob on the inside of the door, which push button may be operated to dog the outside knob, or in some way prevent the operation of the latch by the outside knob. As such a push button must operate in some manner through the knob spindle, this practice has been attended with a construction involving more or less expense, as it requires a somewhat complex mechanism.

One object of the present invention is to provide a door lock of the character described, which look shall be of very simple construction and at the same time efficient and positive'in operation.

A still further object of the invention is the provision of a door lock of the character described wherein the mechanism for dogging the latch bolt comprises a movable element mounted in the rose which surrounded the shank of the door knob at the inside of the door, which element operates to dog the spindle of the knob at the outside of the door.

A further object of the invention is the .provision of a lock of the character described wherein the dogging mechanism for the outside door knob comprises devices mounted in the knob roses at the inside and outside of the door, so as to be disposed and operate exteriorly of the lock mechanism.

Still another object of the invention is the provision of a door latch having means whereby the outside knob may be dogged against operation, which latch shall comprise a divided sections operated respectively by the inner and outer knobs, whereby the door may at all times be operated by the inside knob and spindle, and whereby the dogging mechanism is released and restored to inoperative position upon the turn.- ing of the inside knob by means operated by the inside knob spindle and mounted within the rose surrounding such knob.

To these and other ends the invention consists in the novel features and combinations of parts to be hereinafter described and claimed.

In the accompanying drawings:

Fig. 1 is a front elevational view of a fragment of a door provided with. a door latch em-- bodying my invention;

Fig. 2 is a face view of the door and lock shown in Fig. 1;

Fig. 3 is a sectional view on line 3-3 of Fig. 2;

Fig. 4 is a view similar to Fig. 3 but showing the parts in a difierent position;

Fig. 5 is a view of the latch mechanism;

Fig. 6 is an inner view of the outside rose;

Fig. 7 is a sectional view on line 1-1 of Fig. 3; and

Fig. 8 isa sectional view on line 8--8 of Fig. 7. a

To illustrate a preferred embodiment of my invention I have shown a portion of a door ID in which is mounted a lock case II, the case having a latch bolt l2 slidably housed therein and maintained in protracted position by means of the spring l3. It may be observed that the lock case II is provided with a cover I l secured in place by a screw l5 threaded into a post It secured to the case and against which post the rear end of the spring l3 reacts.

To the bolt I2 is secured a bifurcated stem having legs I1 and 18 which embrace the post l6. Also slidably mounted in the case is a latch-retracting member l9 having thereon a pin 20,.which pin is adapted to engage a lever 2|, the lever in turn engaging in a slot 22 at the end of one leg 3 of the bolt stem, whereby when the latch-retracting member I9 is moved rearwardly in the latch case, it will effect retraction of the latch bolt through the pin 20 and lever 2|.

The latch-retracting member I9 is also bifurcated at its rear end, and the legs thereof are provided with laterally turned portions 23 and 24, which are adapted to be engaged by rollbacks 25 and 26. These rollbacks are individual members, as shown, and each is provided with a hub knob spindle having independently rotatable member, as shown at 21 and 28, these hub members being rotatably mounted respectively in the case H and cover l4 of the lock.

Passing through the hubs 21 and 28 is a knob spindle, which knob spindle is divided into two sections 30 and 3|, the division being disposed substantially at the plane dividing the hubs 2'! and 28. It will be understood that the spindle sections are rectangular in cross section, as are also the openings in the hubs 21 and 23 through which the spindles extend, so that rotation of each of the spindles will effect rotation of the hub with which it is engaged, so as to move the latch-retracting member [9 and effect retraction of the latch bolt. As shown in Fig. 3, one of the spindles 3| is provided with a threaded opening 32 extending longitudinally thereof, and the other spindle is provided with a threaded post 33 which is engaged in the opening 32 and holds the two spindle sections against longitudinal separation, while at the same time permitting independent rotation thereof. Itwill be understood that when the lock mechanism is assembled, each spindle is permitted only a partial turn in retracting the latch bolt, so that there will be no tendency of one spindle section to become threaded ofi from the other.

To the spindle section 30 may be-secured the shank of the inside knob 34, while the shank of the outside knob 35 maylikewise be secured to the spindle sections 3|, the knob shanks being surrounded by roses 35 and 31.

A plate 38 is secured at the inside of the rose 31, the plate standing in spaced relation to the body of the rose, and being provided with an opening 39 in which is rotatably mounted a 1 boss "40 upon a hub member 4|, which hub member has a rectangular opening to non-'rotatably receive the spindle section 3|. To the hub member 4| is secured an arm or wing 42 provided with an opening 43 which may register with an opening 44 in the rose 37, and also with an opening 45 in the plate'38, which opening may be surrounded by a collar 45 secured to the plate.

A plate 48 is similarly secured to the rose 35 to stand in spaced relation therefrom, and be- I being mounted in the collar 46 and designed to pass through the openings 45 and 43, so as, to lock the hub 4| against movement when the button 54 is pressed inwardly, or to the left, as shown in Fig. 3, and thereby dog the spindle section 31 against movement. A spring 55 surrounds the plunger 53 and is compressedbetween the laterally extended end'of the guide member and a collar 55 secured on the plunger '53, so as to normally hold the push button 54 inits outward position. Y

'Itfwill, of course, be necessary to provide means for maintaining the plunger in its depressed position against the action of the spring 55, in order that it may operate to dog the outside knob 35. Such means is provided in'the form of a detent 5'! pivoted at 58 to the hub 49, as shown more especially in Fig. 7. It will be noticed that the hub is cut away at one side thereof in order to provide room for this detent, which is of aro'ua'te shape and is pressed outwardly by a iii) Secured to 1 x spring 58. The free end of this detent is provided with a beveled edge 59, which cooperates with a beveled face 63 of the collar 55 secured to the plunger 53.

The operation of the device may be briefly described as follows: As the latch mechanism is relatively simple, it is believed that the operation thereof will be understood without further explanation. That is, when either of the knobs 34 or 35 is rotated, the corresponding spindle 35 or 3! is likewise rotated (each independently of the other), and the corresponding hub member 2'? or 28 is likewise rotated to retract the latch through one of the rollbacks or 25. The latch bolt is returned to its protracted position by meansof the spring l3, which likewise returns the spindle section or 3| to its original position in readiness for another operation. It will be understood that when the spindle sections and 3i are rotated, the respective hubs 49 and Mfare 'lik'ewise rotated, the spindle section 49 carrying with it "the pivoted -detent '51, and the spindle's'ecti'on 4| carrying with it the arm or wing 42 having the opening 43 therein.

When the parts are in the position normally occupied when the door is closed, that is, when the latch bolt is protracted, the'opening 43 will lie opposite the opening and the plunger 53. If it 'is now desired to dog the outside knob against operation, the plunger 54 is pressed inwardly, or to the left, as shown in Fig. 4. This cams the detent '51toward'the hub 49 against the'action ofthe spring '53 so as to allow the beveled face '60 to pass by the edge 59 of the detent. When the edge'60 'of the collar 56 has passed by the detent; the latter springs outwardly behind the collar, as shown in Fig. 4, thus holding the plunger 53 in its inner position, in which the free end lies within the opening 43 so as to hold the arm '42 against movement. It will be appreciated that at this time, with the parts in this position, the outside knob is dogged against operation, while the inside knob is free to turn. The turning of the inside knob will also rotate'the detent5'l, dueto its connection with the hub 49, and carry this detentfrom the position' behind the co1lar'56, thus permitting this collar to be moved to the right, asqshown inFig. 3, by the spring -55,'and restoring the plunger to its original position.

Whenthe inside knob has been turned towithdrawn the latch and permit the spring to protract theplunger'53, it will be restored to its original position by the bolt spring 13 acting through the bolt retractor and rollback '2 5. This return rotation of thespin'dle section 36 again brings the 'detent'5'linto the position shown in Fig. 13 of the drawings, where its beveled surface 59 is in engagement with'the beveled suriace'fifl 'of the collar-56. 'Suitableprovision may be made for opening the door from the outside in an emergency when'the outside 'knob has been dogged against operation. 'Thism'a'y be done, for example, by extending the post-33 through the spindle section 3| so that its outer end may beaccessible through an opening in the knob 35 for engagement bya proper tool, as shown in Fig. 2, so that the inside spindle section may be rotated from the outside of the door.

While I have shown and described'a preferred embodiment of my invention, it will be understood that itis not to be limited to all of the details'shown, but is capable ofmddification and variation within the "spirit'of' the'invention and within the scope 'of theappe'nde'd claims.

What I claim is:

1. In a door look, a casing, a latch bolt reciprocably mounted therein, retracting means for the bolt within the casing, inner and outer knobs, means connecting said retracting means to the knobs for operation thereby, said means comprising independently rotatable spindle sections one secured to each knob, means operable from the inside of the door to dog the outside knob against movement, said dogging means being located wholly exteriorly of the casting means to hold the dogging member in operative position, and said holding means being released by rotation of the inner knob. I

2. In a door look, a casing, a latch bolt reciprocably mounted therein, bolt-retracting means within the casing, inner andouter knobs, means connecting said retracting means to the knobs for operation thereby, said means comprising independently rotatable spindle sections one secured to each knob, means operable from the inside of the door to dog the outside knob against movement, said dogging means comprising a plunger having a part projecting at the inside of the door, a member carried by the outer spindle section exteriorly of the casing, and said plunger being movable into engagement with said member.

3. In a door look, a casing, a latch bolt reciprocably mounted therein, bolt-retracting means within the casing, inner and outer knobs, means connecting said retracting means to the knobs for operation thereby, said means comprising independently rotatable spindle sections one secured to each knob, means operable from the inside of the door to dog the outside knob against movement, said dogging means comprising a plunger having a part projecting at the inside of the door, a member carried by the outer spindle section exteriorly of the casing, said plunger being movable into engagement with said member, and means to hold said plunger in dogging position.

4. In a door look, a casing, a latch bolt reciprocably mounted therein, inner and outer knobs, means connecting said bolt to the knobs for operation thereby, said means comprising independently rotatable spindle sections one secured to each knob, means operable from the inside of the door to dog the outside knob against movement, said dogging means comprising a plunger having a part projecting at the inside of the door, a member carried by the outer spindle section at the outside of the door, said plunger being movable into engagement with said member, means to hold said plunger in dogging position, and said means being released by the rotation of the inner spindle section.

5. In a door lock, a casing, a latch bolt reciprocably mounted therein, bolt-retracting means within the casing, inner and. outer knobs, means connecting said retracting means to the knobs for operation thereby, said means comprising independently rotatable spindle sections one secured to each knob, means operable from the inside of the door to dog the outside knob against movement, said dogging means comprising a plunger having a part projecting at the inside of the door, a member carried by the outer spindle section at the outside of the door, said plunger being movable into engagement with said member, and means to hold said plunger in dogging position, said means comprising a spring-pressed detent engageable with a part of said plunger to hold the latter in dogging position.

6. In a door lock, a casing, a latch bolt reciprocably mounted therein, inner and outer knobs, means connecting said bolt to the knobs for operation thereby, said means comprising independently rotatable spindle sections one secured to each knob, means operable from the inside of the door to dog the outside knob against movement, said dogging means comprising a plunger having a part projecting at the inside of the door, a member carried by the outer spindle section at the outside of the door, said plunger being movable into engagement with said member, rotatable means to hold said plunger in dogging position, said means comprising a spring-pressed detent engageable with a part of said plunger to hold the latter in dogging position, and said detent being rotated to inoperative position by rotation of the inner spindle section.

7. In a door lock, a casing, a latch bolt reciprocably mounted therein, retracting means for the bolt within the casing, a spindle connected to the retracting means and passing through the casing and comprising independently operable sections, inner and outer knobs one of which is secured to each of said sections to rotate the same, a rose for each knob, a plunger movably mounted in one rose and projecting through the door to a point adjacent the other rose, and

means carried by the spindle section associated with said other rose and disposed exteriorly of the lock case with which means said plunger-engages to dog said spindle section against movement.

8. In a door look, a casing, a latch bolt reciprocably mounted therein, a spindle passing through the casing and comprising independently operable sections, inner and outer knobs one of which is secured to each of said sections to rotate the same, a rose for each knob, a hub rotatably carried by the outer rose, said hub being non-rotatably engaged with the associated spindle section, and a plunger movably carried by the inner rose and adapted to engage a part of said hub to dog the outer knob against movement.

9. In a door look, a casing, a latch bolt reciprocably mounted therein, a spindle passing through the casing and comprising independently operable sections, inner and outer knobs one of which is secured to each of said sections to rotate the same, a rose for each knob, a hub rotatably carried by the outer rose, said hub being non-rotatably engaged with the associated spindle section, said hub having a projecting member thereon provided with an opening, and a plunger carried by the inner rose and projectible into said opening to dog the outer knob against movement.

10. In a door look, a casing, a latch bolt reciprocably mounted therein, a spindle passing through the casing and comprising independently operable sections, inner and outer knobs one of which is secured to each of said sections to rotate the same, a rose for each knob, means to dog the outer knob against operation comprising a member mounted on the outer spindle and concealed within the associated rose, and a plunger carried by the inner rose and movable into engagement with said member.

11. Ina door lock, a casing, a latch bolt reciprocably mounted therein, a spindle passing through the casing and comprising independent 1y operable sections, inner and outer knobs one of whichis secured to each of said sections to rotate the same, a rose for each knob, means to dog the outer knob against operation comprising a member mounted on the outer spindle and concealed within the associated rose, a plunger carried by the inner rose and movable into engagement with said member, a hub non-rotatably mounted on the inner spindle section within the inner rose, and a detent carried by said hub and spring-pressed into engagement with said plunger to hold the latter in operative position.

12. In a door lock, a casing, a latch bolt reciprocably mounted therein, a spindle passing through the casing and comprising independent- 1y operable sections, inner and outer knobs one of which is secured to each of saidsections to rotate the same, .a rose for each knob, means to dog the outer knob against operation comprising a member mounted on the outer spindle and concealed Within the associated rose, aplunger carried by the inner rose and movable into engagement with said member, a hub non-rotatably mounted on the inner spindle section within the inner rose, and a detent carried by said hub and spring-pressed into engagement with said plunger to hold the latter in operative position, said detent being rotatable with the spindle to a position to release said plunger.

HENRY G. VOIGI-IT. 

